<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box{
            width: 650px;
            height: 1000px;
            background-color: #ff6060;
            display: flex;
            /* 水平方向布局 */
            /* justify-content: center; */
            justify-content: space-between;
            /* 换行 */
            flex-wrap: wrap;
            /* 垂直方向布局 */
            align-content: space-between;
        }
        .box>div{
            width: 100px;
            height: 100px;
            background-color: #76ff6f;
            
        }
    </style>
</head>
<body>
    <div class="box">
        <div class="d1">d1</div>
        <div>d2</div>
        <div>d3</div>
        <div>d3</div>
        <div>d3</div>
        <div>d3</div>
        <div>d3</div>
        <div>d3</div>
        <div>d3</div>
        <div>d3</div>
        <div>d3</div>
        <div>d3</div>
        <div>d3</div>
        <div>d3</div>
    </div>
</body>
</html>